Add support for SDL as a base library on OS X.

This commit adds the basic setup in CMake to allow SDL as a base
library for FLTK on OS X (and probably for other platforms as well).

The SDL library driver set is derived from yet another new driver
set named 'Pico'. 'Pico' is a base class for a driver that will
allow porting of FLTK with the tinyest amount of effort. This 
implementation of the SDL driver shall be documented very well
to explain the porting process.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11262 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 19 insertions, 0 deletions

diff --git a/FL/x.H b/FL/x.H
index 393f57935..aca9749a4 100644
--- a/FL/x.H
+++ b/FL/x.H
@@ -33,6 +33,25 @@
 #    include "mac.H"
 #  elif defined(ANDROID)
 #    pragma message "A clean port requires a driver-style system for Fl_X"
+#  elif defined(USE_SDL)
+#    pragma message "FL_PORTING: write a header file based on this file, win32.H, or mac.H to define the FLTK core internals"
+
+//typedef void *Window;
+//typedef void *Fl_Region;
+//typedef void *Fl_Bitmask;
+//typedef void *Fl_Offscreen;
+//#include <FL/Fl_Window.H>
+//class FL_EXPORT Fl_X {
+//public:
+//  Window xid;
+//  Window other_xid;
+//  Fl_X *next;
+//  char wait_for_expose;
+//  static Fl_X* first;
+//  static Fl_X* i(const Fl_Window* wi) {return (Fl_X*)wi->i;}
+//};
+
+#    include "porting.H"
 #  elif defined(FL_PORTING)
 #    pragma message "FL_PORTING: write a header file based on this file, win32.H, or mac.H to define the FLTK core internals"
 #    include "porting.H"